1225216264 has 32 divisors (see below), whose sum is σ = 2344464000. Its totient is φ = 600064192.

The previous prime is 1225216249. The next prime is 1225216283. The reversal of 1225216264 is 4626125221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302847 + ... + 306865.

It is an arithmetic number, because the mean of its divisors is an integer number (73264500).

Almost surely, 2^1225216264 is an apocalyptic number.

It is an amenable number.

1225216264 is a deficient number, since it is larger than the sum of its proper divisors (1119247736).

1225216264 is a wasteful number, since it uses less digits than its factorization.

1225216264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797 (or 4793 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 1225216264 is about 35003.0893493703. The cubic root of 1225216264 is about 1070.0504427846.

The spelling of 1225216264 in words is "one billion, two hundred twenty-five million, two hundred sixteen thousand, two hundred sixty-four".